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Today's Topics:
1. Re: How to connect USRP N210 to FPGA with Ethernet IP core
via Ethernet Phy chip? (Josh Blum)
2. network storage drive for N210 (Khalid Jamil)
3. Re: network storage drive for N210 (Marcus D. Leech)
4. Set Aantenna channel on WBX DB Rev. 3.0 ([email protected])
5. Re: Set Aantenna channel on WBX DB Rev. 3.0 (Josh Blum)
----------------------------------------------------------------------
Message: 1
Date: Sun, 01 Apr 2012 09:47:12 -0700
From: Josh Blum <[email protected]>
To: Jiao Xianjun <[email protected]>
Cc: "[email protected]" <[email protected]>
Subject: Re: [USRP-users] How to connect USRP N210 to FPGA with
Ethernet IP core via Ethernet Phy chip?
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
I don't think you are using gnuradio, So CCd usrp-users
On 04/01/2012 02:38 AM, Jiao Xianjun wrote:
> Hi,
>
>
> Instead of computer, I want to use standalone FPGA to do signal processing.
> I have a FPGA dev board with 1000M Ethernet port, and the board can
> send/recv UDP packet with computer now.
>
> If I want to use the FPGA board to control and use USRP N210 directly, what
> should I do?
>
Take small steps first.
First step:
* Control the USRP via a host PC.
* Generate TX samples in the FPGA board, with USRP as destination
* Instruct the USRP to send RX samples to the FPGA board
http://files.ettus.com/uhd_docs/manual/html/usrp2.html#alternative-stream-destination
Next step is to replace the host PC with something, I suppose you have 3
options.
1) run linux on the FPGA board (if possible)
2) perhaps a small embedded device that runs linux on the network
Example: http://www.gumstix.com/
3) generate the USRP control packets on the FPGA board
> I have to implement a CPU in FPGA and run Linux on it? Or is there a simple
> way?
>
Given the above options, using some kind of embedded linux means you do
not have to replicate UHD for control operations. I believe that it is
simpler to run UHD natively on an embedded device, than to replicate the
functionality.
> Is there any information on protocol (between USRP and computer).?
>
>
The control protocol can be seen here:
See host/lib/usrp/usrp2/usrp2_iface.cpp
and firmware/zpu/apps/txrx_uhd.c
The data protocol is VITA49.
It would be helpful to observe packets with wireshark.
-Josh
------------------------------
Message: 2
Date: Sun, 1 Apr 2012 23:16:33 +0300
From: Khalid Jamil <[email protected]>
To: [email protected]
Subject: [USRP-users] network storage drive for N210
Message-ID:
<CAMoB=rAHoKK3prj72vCO=lkwbybhouayjn6vap++0wtp10z...@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"
Hi,
With the recent release of uhd driver, it is possible to stream date to a
network location.
Does this mean that we can use a network hard drive to stream/record data?
Can anyone recommend an example system for this purpose?
I have eight USRP N210s. Can I connect them to eight different network hard
drives through a switch to store at the maximum data rate?
Thanks,
Khalid.
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Message: 3
Date: Sun, 01 Apr 2012 16:23:06 -0400
From: "Marcus D. Leech" <[email protected]>
To: [email protected]
Subject: Re: [USRP-users] network storage drive for N210
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 04/01/2012 04:16 PM, Khalid Jamil wrote:
> Hi,
>
> With the recent release of uhd driver, it is possible to stream date
> to a network location.
>
> Does this mean that we can use a network hard drive to stream/record
> data?
>
> Can anyone recommend an example system for this purpose?
>
> I have eight USRP N210s. Can I connect them to eight different network
> hard drives through a switch to store at the maximum data rate?
>
> Thanks,
>
> Khalid.
>
>
Only if you can convince your NAS to speak the VRT-inside-UDP protocol
that the N210 "speaks". But in principle, yes.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
------------------------------
Message: 4
Date: Mon, 2 Apr 2012 13:03:41 +0200
From: <[email protected]>
To: <[email protected]>
Subject: [USRP-users] Set Aantenna channel on WBX DB Rev. 3.0
Message-ID:
<[email protected]>
Content-Type: text/plain; charset="iso-8859-1"
Hi there,
I have some Problems with the new WBX Boards (Rev. 3.0) on the usrp2. I
switched to the new version of uhd 3.3.2 because the WBX Board with the older
version doesn't working correct. With the new version the "probe" example does
work.
I also switched to version 3.4.0 to solve the followed problem without success.
So I try to set the RX Antenna and it throw an "Acces Violation" exception.
When I ask "get_rx_antennas" I get an empty vector. When I asked
"get_rx_antenna" I get the silly character bits 0x0c
Set the frequency, bandwidth and gain does work without any problems.
Thanks for your reply
Regards Sebastian
LS telcom AG
Fu?, Sebastian
Im Gewerbegebiet 31-33
D-77839 Lichtenau
Phone: +49 7227 9535-660
Fax: +49 7227 9535-605
e-mail: [email protected] <mailto:[email protected]>
Amtsgericht Mannheim
HRB 211164
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Message: 5
Date: Mon, 02 Apr 2012 07:34:13 -0700
From: Josh Blum <[email protected]>
To: [email protected]
Subject: Re: [USRP-users] Set Aantenna channel on WBX DB Rev. 3.0
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1
On 04/02/2012 04:03 AM, [email protected] wrote:
>
>
>
>
> Hi there,
>
>
>
> I have some Problems with the new WBX Boards (Rev. 3.0) on the usrp2. I
> switched to the new version of uhd 3.3.2 because the WBX Board with the older
> version doesn't working correct. With the new version the "probe" example
> does work.
>
> I also switched to version 3.4.0 to solve the followed problem without
> success.
>
> So I try to set the RX Antenna and it throw an "Acces Violation" exception.
> When I ask "get_rx_antennas" I get an empty vector. When I asked
> "get_rx_antenna" I get the silly character bits 0x0c
>
> Set the frequency, bandwidth and gain does work without any problems.
>
>
>
Sounds like there is something broken when trying to read one of the
eeprom on the daughterboard. Can you install the latest UHD and post the
output of uhd_usrp_probe?
-Josh
------------------------------
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